CN103551310A - Coal separation apparatus - Google Patents
Coal separation apparatus Download PDFInfo
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- CN103551310A CN103551310A CN201310455808.4A CN201310455808A CN103551310A CN 103551310 A CN103551310 A CN 103551310A CN 201310455808 A CN201310455808 A CN 201310455808A CN 103551310 A CN103551310 A CN 103551310A
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- Prior art keywords
- coal
- platform
- bight
- screening plant
- particle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
Abstract
A coal separation apparatus comprises a main body, a first deck, a guide, an air-blowing fan and a vibrator.
Description
Technical field
The present invention relates to a kind of coal screening plant, relate to a kind of cleaned coal that contains in raw coal and coal screening plant of gangue of screening.
Background technology
Recently, along with crude oil price sharply rises, people wish to guarantee to replace the energy of crude oil harder.Although just can replace the novel energy such as solar energy, bioenergy of traditional fossil fuel in active research, its commercial application is still subject to a lot of restrictions.Therefore, recently, the demand of coal is increased again.
As the original coal digging out from coal seam, raw coal (run of mine coal) contains a large amount of coal dusts, is mixing cleaned coal that ash content is few and as the gangue (gangue) of the rubble of rock.
Now, if contain gangue in cleaned coal, in cleaned coal combustion process, heat reduces and generation pernicious gas (SO
ξ).Especially, the alkaline components (K containing in the mica in gangue, chlorite, clay etc.
2o, Na
2o) in combustion process, make the melting point depression of ash content, make heat power plant boiler inner generation slagging scorification (slagging) or dirt (fouling), thereby cause shorten the service life of boiler.
Therefore,, in order to improve the service life of efficiency of combustion and prolonged boiler, just attempting exploitation for utilizing physical method to remove the technology of the gangue that is mingled in raw coal.
In the prior art, in No. 1010940th, Korean granted patent, a kind of device that improves the quality of low-rank coal is disclosed, it is characterized in that, comprise grater, screen cloth and collecting agent feedway, described grater comprises: pulverizer main body, in this pulverizer main body, be formed with accommodation section, for holding together low-rank coal and the water with content of ashes more than certain level; A plurality of friction balls, the plurality of friction ball is contained in the accommodation section of described pulverizer main body, by the collision with described coal and friction, pulverizes described coal; And mixer, this mixer can be rotatably set in described pulverizer main body, and described coal and friction ball are stirred and make collision mutually and friction.Described screen cloth is arranged on the upside of the accommodation section of described grater, and on described screen cloth, is formed with a plurality of open-works that only make the particle below a certain size pass through.Described collecting agent feedway is supplied to described accommodation section by collecting agent, and the coal particles hydrophobic of pulverizing in the described grater that this collecting agent makes to pulverize is so that described coal particle can be suspended in the upside of described accommodation section.In sum, prior art flotation raw coal is to be categorized as raw coal on cleaned coal particle and gangue particle.
Yet prior art need to, by the dehydration of cleaned coal particle and dry last handling process, therefore need large cost.
Therefore, need the various coal screening plants of exploitation for addressing the above problem.
[prior art document]
[patent documentation]
(patent documentation 1) No. 1010940th, Korean granted patent (2011.01.19)
Summary of the invention
Technical problem
The present invention proposes for addressing the above problem, and the object of the present invention is to provide a kind of coal screening plant, and this coal screening plant screens respectively cleaned coal particle and the gangue particle being mingled in raw coal by difference of specific gravity, and does not need aftertreatment technology.
Technical scheme
In addition, described coal screening plant 1000 is characterised in that, also comprise: the second platform 230, described the second platform 230 is arranged between described the first platform 210 and air blast 400, and is formed with a plurality of the second holes 231 that the air transmitting from described air blast 400 are divided into uniform size; And framework 240, in the upper surface of described framework 240 and lower surface, be inserted with respectively described the first platform 210 and the second platform 230, along the incline direction on described inclined plane 110, be mounted obliquely within the inner side on described inclined plane 110.
In addition, described coal screening plant 1000 is characterised in that, described second hole 231 of described the second platform 230 forms wider than described the first hole 211.
In addition, described coal screening plant 1000 is characterised in that, also comprise the first wavy thing 250, the second wavy thing 260 and blocking-up wall 270, when a plurality of bights of described the first platform 210 are called the first bight 212 with the ascending order of the height of present position, the second bight 213, triangular part 214, during the 4th bight 215, described the first wavy thing 250 is arranged between the upper end in described the second bight 213 and the upper end in the 4th bight 215, described the second wavy thing 260 is arranged between described first upper end in bight 212 and the upper end of triangular part 214, described blocking-up wall 270 is centered around between the upper end in described the first bight 212 and the upper end in the second bight 213.
In addition, described coal screening plant 1000 is characterised in that, when a plurality of bights of described the first platform 210 are called the first bight 212 with the ascending order of the height of present position, the second bight 213, triangular part 214, during the 4th bight 215, between described the 4th upper end in bight 215 and the upper end of triangular part 214 by the first partition wall 280 and the second partition wall 290 be divided between the first row clearancen adjacent with described the 4th bight 215 216 and the second row clearancen adjacent with described triangular part 214 between 217, be supplied to the cleaned coal particle that is mixed with a small amount of gangue particle in the raw coal crushed material of described the first platform 210 and be expelled between described first row clearancen 216, the gangue particle that is mixed with a small amount of cleaned coal particle is expelled between described second row clearancen 217.
In addition, described coal screening plant 1000 is characterised in that, also comprises sucting 700, and this sucting 700 is arranged on the upside of described main body 100, for sucking dust.
In addition, described coal screening plant 1000 is characterised in that, constant and be applied to and under the state that the vibration frequency of described the first platform 210 is constant, meet following formula 1 in the driving frequency of described air blast 400:
< formula 1>
CR=0.2173FR
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-7.6525FR+96.385(, and FR is the raw coal crushed material quantity delivered hourly of described raw coal supply unit 300, FR=2～6).
In addition, described coal screening plant 1000 is characterised in that, is in application to and under the state that the vibration frequency raw coal crushed material quantity delivered hourly constant and described raw coal supply unit 300 of described the first platform 210 is constant, meets following formula 2:
< formula 2>
CR=0.0221ABF
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-1.4684ABF+91.983(, and ABF is the driving frequency of described air blast 400, ABF=30～60).
In addition, described the first platform 210 is characterised in that, the poor face 218 of the upper surface section of forming of described the first platform 210.
Beneficial effect
Therefore, coal screening plant according to the present invention screens cleaned coal particle and the gangue particle being mingled in raw coal crushed material mutually with dry method according to difference in specific gravity, and does not need dehydration and dry aftertreatment technology.
Accompanying drawing explanation
Fig. 1 is according to the perspective view of coal screening plant of the present invention;
Fig. 2 is according to the perspective view of the decomposition of coal screening plant of the present invention;
Fig. 3 is according to the perspective view of the amplification of vibration section of the present invention;
Fig. 4 is according to the perspective view of the decomposition of the first platform of the present invention, the second platform, framework;
Fig. 5 is the perspective view illustrating according to the embodiment of the first platform of the present invention;
Fig. 6 is according to the service chart of coal screening plant of the present invention;
Fig. 7 is according to the plane of the embodiment 1 of coal screening plant of the present invention;
Fig. 8 is according to the service chart of the embodiment 1 of coal screening plant of the present invention;
Fig. 9 is according to the side view of the embodiment 2 of coal screening plant of the present invention.
The specific embodiment
Below, use accompanying drawing to describe in more detail technological thought of the present invention.
Because accompanying drawing is only for for illustrating in greater detail an example shown in technological thought of the present invention, therefore technological thought of the present invention is not limited to the shape of accompanying drawing.
In direction indication of the present invention, the above-below direction of accompanying drawing is defined as to above-below direction, the left and right directions of accompanying drawing is defined as to left and right directions, the fore-and-aft direction of accompanying drawing is defined as to fore-and-aft direction, the left and right directions of accompanying drawing and fore-and-aft direction are referred to as to horizontal direction.
Fig. 1 is according to the perspective view of coal screening plant of the present invention, and Fig. 2 is according to the perspective view of the decomposition of coal screening plant of the present invention, and Fig. 3 is according to the perspective view of the amplification of vibration section of the present invention.
As depicted in figs. 1 and 2, coal screening plant 1000 according to the present invention comprises main body 100, the first platform 210, guide plate 220, raw coal supply unit 300, air blast 400 and vibration section 500.
Described main body 100 forms more to the wider hexahedral shape of upside, the inclined plane 110 that upper surface tilts to the right from left side when forming side direction rear side inclination in the past, central authorities on described inclined plane 110 form opening, and a plurality of supporting members 120 are arranged and are formed on the edge on described inclined plane 110.
Now, the shape tilting to the right from left side when although preferably described inclined plane 110 forms side direction rear side inclination in the past, but the invention is not restricted to this, as long as described inclined plane 110 is the side in direction and the shape of the lopsidedness in left and right directions forwards, backwards, can be suitable for.
Described supporting member 120 is as for supporting the structure of the assembly of the inner side that is arranged on described inclined plane 110, can form cylindrical, but the invention is not restricted to this.
Described the first platform 210 forms tabular, along the incline direction on described inclined plane 110, be mounted obliquely within the inner side on described inclined plane 110, by described supporting member 120, support, a plurality of the first holes 211 are closely formed on described the first platform 210 along the incline direction on described inclined plane 110 simultaneously.In addition,, although described the first platform 210 also can form web plate, the invention is not restricted to this.
When a plurality of bights of described the first platform 210 are called the first bight 212, the second bight 213, triangular part 214, the 4th bight 215 with the ascending order of the height of present position, described guide plate 220 forms more longways along the direction towards described the 4th bight 215, a plurality of described guide plates 220 are along arranging from described the second bight 213 directions towards described triangular part 214, thereby are bonded to the upper surface of described the first platform 210.
Described raw coal supply unit 300 is supplied with raw coal crushed material to position adjacent with described the second bight 213 in the upper surface of described the first platform 210.Now, preferably, the area that described a plurality of the first holes 211 form the particle containing in Area Ratio raw coal crushed material is little, so that be supplied to the raw coal crushed material of the upper surface of described the first platform 210, does not enter in described a plurality of the first hole 211.
Described air blast 400 can be configured to air blast, is arranged on the inside of described main body 100, to transmit air to described the first hole 211.
As shown in Figure 3, described vibration section 500 can be configured to be hinged to the vibrator of one end of described the first platform 210, acting as of described vibration section 500: apply the vibration of horizontal direction to described the first platform 210, thereby making to be supplied in the raw coal crushed material of upper surface of described the first platform 210 the cleaned coal particle that has a mobilization force by the air by described a plurality of the first holes 211 is expelled between described the second bight 213 and the 4th bight 215 along described guide plate 220, and make proportion higher and do not there is mobilization force than cleaned coal particle, particulate and tabular gangue particle are expelled between described the first bight 212 and triangular part 214 along described guide plate 220.Wherein, the proportion of cleaned coal particle is 1.9kg/m
3below, the proportion of gangue particle is 2.2kg/m
3above.
Therefore, coal screening plant 1000 according to the present invention is cleaned coal particle and the gangue particle to contain in dry method screening raw coal crushed material according to difference in specific gravity, and does not need dehydration and dry aftertreatment technology.
In addition, described vibration section 500 can form the bent axle that the piston (not shown) of vibration occurs and be engaged to described piston by the thrust that applies horizontal direction to described the first platform 210.Now, the raw coal crushed material that is supplied to the upper surface of described the first platform 210 is only subject to the vibration that the thrust of the horizontal direction that applies by described piston causes, the broken probability thereby the particle that reduces to contain in raw coal crushed material collides mutually.
In addition, coal screening plant 1000 according to the present invention can be configured to also comprise: the first ways 610, this first ways 610 is arranged between described the second bight 213 and the 4th bight 215, so that the cleaned coal particle being expelled between described the second bight 213 and the 4th bight 215 is guided to downside; And second ways 620, this second ways 620 is arranged between described the first bight 212 and triangular part 214, so that the gangue particle being expelled between described the first bight 212 and triangular part 214 is guided to downside.
In addition, preferably, described guide plate 220 is not formed on the position adjacent with described the 4th bight 215.This be because: if described guide plate 220 is formed on the position adjacent with described the 4th bight 215, the cleaned coal particle that is mixed with a small amount of gangue particle can be expelled between described the second bight 213 and the 4th bight 215 along described guide plate 220.
Fig. 4 is according to the perspective view of the decomposition of the first platform of the present invention, the second platform, framework.
As shown in Figure 4, coal screening plant 1000 according to the present invention can be configured to also comprise: the second platform 230, this second platform 230 makes to be sent to described the first hole 211 from the air of described air blast 400 transmission is divided into uniform size, and framework 240.
Described the second platform 230 forms tabular, is arranged between described the first platform 210 and air blast 400, closely forms a plurality of the second holes 231 that the air transmitting from described air blast 400 are divided into uniform size on described the second platform 230.Now, it is large that described the second hole 231 forms described in Area Ratio the area in the first hole 211, and the air transmitting from described air blast 400 can be smoothly through.
Described framework 240 forms the tabular of above-below direction upper shed, inserts respectively described the first platform 210 and the second platform 230 in upper surface and lower surface, thereby along the incline direction on described inclined plane 110, is mounted obliquely within the inner side on described inclined plane 110.
Therefore, coal screening plant according to the present invention has following effect: by being configured to also to comprise the second platform 230 and framework 240, make to be supplied to described the first hole 211 from the air of described air blast 400 transmission is divided into uniform size by described the second hole 231.
Now, be supplied to cleaned coal particle in the raw coal crushed material of upper surface of described the first platform 210 by the air of the even size by described a plurality of the first holes 211 and in each field distributing, there is the mobilization force of even size on the upper surface of described the first platform 210.
In addition,, referring to figs. 1 through Fig. 2, coal screening plant 1000 according to the present invention can be configured to also comprise the wavy thing 260 of the first wavy thing (ripple) 250, second and blocking-up wall 270.
Described the first wavy thing 250, as being arranged in the structure between the upper end in described the second bight 213 and the upper end in the 4th bight 215, guides to a direction by the cleaned coal particle being expelled between described the second bight 213 and described the 4th bight 215.Shown in figure, described the first wavy thing 250 guides to the embodiment towards the direction in described the 4th bight 215 by cleaned coal particle, but the invention is not restricted to this.
Described the second wavy thing 260, as being arranged in the structure between described first upper end in bight 212 and the upper end of triangular part 214, guides to a direction by the gangue particle being expelled between described the first bight 212 and described triangular part 214.Shown in figure, described the second wavy thing 260 guides to the embodiment towards the direction of described triangular part 214 by gangue particle, but the invention is not restricted to this.
Described blocking-up wall 270, as being centered around the structure between the upper end in described the first bight 212 and the upper end in the second bight 213, playing and stops the raw coal crushed material of the upper surface that is supplied to described the first platform 210 to be expelled between described the first bight 212 and the second bight 213.
Fig. 5 is the perspective view illustrating according to the embodiment of the first platform of the present invention.
As shown in Figure 5, the upper surface of described the first platform 210 can form along the poor face 218 of the section differing from towards the direction section of being in described the first bight 212 from described the 4th bight 215, prevents that gangue particle from moving along the direction between described the second bight 213 and the 4th bight 215.
Fig. 6 is according to the service chart of coal screening plant of the present invention.
As shown in Figure 6, illustrate according to the operation logic of coal screening plant 1000 of the present invention.
First, described raw coal supply unit 300 is supplied to raw coal crushed material the position adjacent with described the second bight 213 in the upper surface of described the first platform 210.Now, raw coal crushed material is not expelled between described the first bight 212 and the second bight 213 by described blocking-up wall 270.
Then, described air blast 400 is sent to described a plurality of the second hole 231 by air.Now, the air transmitting from described air blast 400 is divided into after uniform size described a plurality of the second holes 231, is sent to described the first hole 211.
Now, by passing through the air in described a plurality of the first holes 211, lower its mobilization force of proportion that is supplied to the particle containing in the raw coal crushed material of described the first platform 210 is higher.
In more detail, by passing through the air in described a plurality of the first holes 211, cleaned coal particle in raw coal crushed material has the highest mobilization force because proportion is minimum, the cleaned coal particle that is mixed with a small amount of gangue particle has the second high mobilization force because proportion second is low, be mixed with the gangue particle of a small amount of cleaned coal particle due to the low mobilization force with third high of proportion the 3rd, gangue particle does not have mobilization force because proportion is the highest.
Now, in Fig. 6, for the mobile route of the particle containing in raw coal crushed material is shown more simply, cleaned coal particle is shown to circle, the cleaned coal particle that is mixed with a small amount of gangue particle is shown to surface conjunction and has leg-of-mutton circle, the gangue particle that is mixed with a small amount of cleaned coal particle is shown to surface conjunction circular triangle, and gangue particle is shown to triangle particle.
Then, described vibration section 500 applies the vibration of horizontal direction to described the first platform 210, the cleaned coal particle with the highest mobilization force is expelled between described the second bight 213 and the 4th bight 215 along described guide plate 220, the cleaned coal particle that is mixed with a small amount of gangue particle with the second high mobilization force is crossed described guide plate 220 and is expelled to the 4th nearer position, bight 215 described in the distance between described triangular part 214 and the 4th bight 215, the gangue particle that is mixed with a small amount of cleaned coal particle with the mobilization force of third high is crossed described guide plate 220 and is expelled to the nearer position of triangular part 214 described in the distance between described triangular part 214 and the 4th bight 215, the gangue particle without mobilization force is expelled between described the first bight 212 and triangular part 214 along described guide plate 220.
Now, described the first wavy thing 250 plays the effect that the cleaned coal particle that makes to be expelled between described the second bight 213 and the 4th bight 215 is discharged fast from the upper surface of the first platform 210, described the second wavy thing 260 plays the effect that the gangue particle that makes to be expelled between described the first bight 212 and triangular part 214 is discharged fast from the upper surface of the first platform 210, the cleaned coal particle of upper surface and the treating capacity of barren rock particle that are supplied to the first platform 210 are increased, thereby can reduce the energy of consumption.
Therefore, coal screening plant 1000 according to the present invention has following effect: not only can utilize difference of specific gravity is cleaned coal particle and gangue particle by raw coal crushed material screening, but also can utilize difference of specific gravity to filter out to be mixed with the cleaned coal particle of a small amount of gangue particle and be mixed with the gangue particle of a small amount of cleaned coal particle.
Fig. 7 is according to the plane of the embodiment 1 of coal screening plant of the present invention.
As shown in Figure 7, in the embodiment 1 of coal screening plant 1000 according to the present invention, between described the 4th upper end in bight 215 and the upper end of triangular part 214 by the first partition wall 280 and the second partition wall 290 be divided between the first row clearancen adjacent with described the 4th bight 215 216 and the second row clearancen adjacent with described triangular part 214 between 217.
Described the first partition wall 280 is along forming from described the 4th bight 215 towards the direction in described the first bight 212, thereby is engaged to the upper end in described the 4th bight 215.Now, the lower end of described the first partition wall 280 can be hinged to the upper end in described the 4th bight 215.
Described the second partition wall 290 is along forming towards the direction in described the second bight 213 from described triangular part 214, thereby is engaged between described the 4th upper end in bight 215 and the upper end of described triangular part 214.Now, the lower end of described the second partition wall 290 can be hinged between described the 4th upper end in bight 215 and the upper end of described triangular part 214.
Fig. 8 is according to the service chart of the embodiment 1 of coal screening plant of the present invention.
As shown in Figure 8, illustrate according to the operation logic of the embodiment 1 of coal screening plant 1000 of the present invention.
As as described according to illustrated in the operation logic of coal screening plant of the present invention, described vibration section 500 applies the vibration of horizontal direction to described the first platform 210, the cleaned coal particle with the highest mobilization force is expelled between described the second bight 213 and the 4th bight 215 along described guide plate 220, the cleaned coal particle that is mixed with a small amount of gangue particle with the second high mobilization force is crossed described guide plate 220 and is expelled between described triangular part 214 and the 4th bight 215, the gangue particle that is mixed with a small amount of cleaned coal particle with the mobilization force of third high is crossed described guide plate 220 and is expelled between described triangular part 214 and the 4th bight 215, the gangue particle without mobilization force is expelled between described the first bight 212 and triangular part 214 along described guide plate 220.
Now, the cleaned coal particle that is mixed with a small amount of gangue particle with the second high mobilization force is expelled between described triangular part 214 and the 4th bight 215, and is expelled between the first row clearancen adjacent with described the 4th bight 215 216.
In addition, the gangue particle that is mixed with a small amount of cleaned coal particle with the mobilization force of third high is expelled between described triangular part 214 and the 4th bight 215, compare the cleaned coal particle that is mixed with a small amount of gangue particle and there is low mobilization force, thereby be expelled between the second row clearancen adjacent with described triangular part 214 217.
Now, if the angle and the position that regulate described the first partition wall 280 and the second partition wall 290 to form each other, can regulate the combined amount of a small amount of gangue particle in the cleaned coal particle that is mixed with a small amount of gangue particle that is expelled between described first row clearancen 216.
Fig. 9 is according to the side view of the embodiment 2 of coal screening plant of the present invention.
As shown in Figure 9, according to the embodiment 2 of coal screening plant 1000 of the present invention, can be configured to also comprise sucting 700, this sucting 700 is arranged on the upside of described main body 100, thereby sucks the dust producing in the screening process of the particle containing in described raw coal crushed material.Now, described sucting 700 can be configured to vacuum inhalator, but the invention is not restricted to this.
Below, will describe the present invention in detail according to following experimental example.
< experimental example 1>
The grade of cleaned coal is assessed with the fixed carbon (Fixed Carbon) and the content of ash content that contain in cleaned coal.That is, fixed carbon content cleaned coal high and that content of ashes is low is assessed as high-quality cleaned coal.The inversely proportional relation of fixed carbon content and content of ashes.That is, if content of ashes is low for fixed carbon content height, if the low content of ashes of fixed carbon content is high.
In coal screening plant 1000 according to the present invention, with front and back upwards on the inclinations angle of 3.5 degree and left and right directions the inclinations angle of 5.5 degree the inclined plane 110 of described main body 100 is set, every gram of screening granularity (size) 1 * 5mm, ash content (ash) 61.72%, heat 2540Cal/g(card) the first former coal sample and the result of the second former coal sample of granularity 5 * 25mm, ash content 58.04%, heat 2849Cal/g shown in following table 1.
[table 1]
The cleaned coal that the separated screening of the first former coal sample is 51%, 30% cleaned coal and gangue mixture, 19% gangue.Especially, the content of ashes of cleaned coal is reduced to 32.82% from the content of ashes 61.72% of the first raw coal, thereby realizes approximately 60.8% ash content clearance.In addition, the heat of cleaned coal also increases to 4690Cal/g from the heat 2850Cal/g of the first raw coal.
That is, according to coal screening plant 1000 of the present invention, can remove the gangue containing in raw coal crushed material by simple proportion screening, and not need reprocessing facility dry and dehydration.
< experimental example 2>
In coal screening plant 1000 according to the present invention, with front and back upwards on the inclinations angle of 3.5 degree and left and right directions the inclinations angle of 5.5 degree the inclined plane 110 of described main body 100 is set, the driving frequency of described air blast 400 is set consistently, make to be applied under the state that the vibration frequency of described the first platform 210 is constant, change the raw coal crushed material quantity delivered hourly of described raw coal supply unit 300 and screen respectively the result of raw coal crushed material as shown in table 2 below.
[table 2]
The selection result of raw coal crushed material: coal screening plant 1000 according to the present invention is constant and be applied under the state that the vibration frequency of described the first platform 210 is constant and meet following formula 1 in the driving frequency of described air blast 400.
< formula 1>
CR=0.2173FR
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-7.6525FR+96.385(, and FR is the raw coal crushed material quantity delivered hourly of described raw coal supply unit 300, FR=2～6)
Now, for the result of the numerical value in described table 2 and described formula 1 calculating coefficient correlation (correlationcoefficient), the value (R of described coefficient correlation
2) be 0.9013, there is high correlation.
< experimental example 3>
In coal screening plant 1000 according to the present invention, with front and back upwards on the inclinations angle of 3.5 degree and left and right directions the inclinations angle of 5.5 degree the inclined plane 110 of described main body 100 is set, the vibration frequency that is applied to described the first platform 210 is set consistently, arrange consistently under the state of raw coal crushed material quantity delivered hourly of described raw coal supply unit 300, change the driving frequency of described air blast 400 and screen respectively the result of raw coal crushed material as shown in table 3 below.
[table 3]
The selection result of raw coal crushed material: meet following formula 2 under the constant state of vibration frequency raw coal crushed material quantity delivered hourly constant and described raw coal supply unit 300 that coal screening plant 1000 according to the present invention is in application to described the first platform 210.
< formula 2>
CR=0.0221ABF
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-1.4684ABF+91.983(, and ABF is the driving frequency of described air blast 400, ABF=30～60)
Now, for the result of the numerical value in described table 3 and described formula 2 calculating coefficient correlations (correlation coefficient), the value (R of described coefficient correlation
2) be 0.9178, there is high correlation.
< experimental example 4>
In coal screening plant 1000 according to the present invention, with front and back upwards on the inclinations angle of 3.5 degree and left and right directions the inclinations angle of 5.5 degree the inclined plane 110 of described main body 100 is set, the driving frequency of described air blast 400 is set consistently, arrange consistently under the state of raw coal crushed material quantity delivered hourly of described raw coal supply unit 300, the result of screening raw coal crushed material in the vibration frequency change of described the first platform 210 is as shown in table 4 below.
[table 4]
The selection result of raw coal crushed material: coal screening plant 1000 according to the present invention meets following formula 3 under the constant state of the driving frequency raw coal crushed material quantity delivered hourly constant and described raw coal supply unit 300 of described air blast 400.
< formula 3>
CR=-0.0447TF
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to+4.2145TF-21.674(, and TF is the vibration frequency of described the first platform 210)
Now, for the result of the numerical value in described table 4 and described formula 3 calculating coefficient correlations (correlation coefficient), the value (R of described coefficient correlation
2) be 0.5491, there is slightly low correlation.
The invention is not restricted to above-described embodiment, there is the various scope of application, and can carry out various modification and not depart from purport of the present invention claimed in claims.
[explanation of Reference numeral]
1000: according to coal screening plant of the present invention
100: main body
110: inclined plane
210: the first platforms
212: the first bights, 211: the first holes
214: the triangular parts in 213: the second bights
215: the four bights 216: between first row clearancen
217: between second row clearancen 218: the poor face of section
220: guide plate
230: the second platforms
231: the second holes
240: framework
250: the first wavy things
260: the second wavy things
270: blocking-up wall
290: the second partition walls of 280: the first partition walls
300: raw coal supply unit
400: air blast
500: vibration section
620: the second ways of 610: the first ways
700: sucting
Claims (9)
1. a coal screening plant (1000), is characterized in that, comprising:
Main body (100), the upper surface of described main body (100) forms along the side in fore-and-aft direction and the inclined plane (110) of the lopsidedness in left and right directions, in described inclined plane (110), forms opening;
The first platform (210), described the first platform (210) is arranged on the inner side on described inclined plane (110) and is formed with a plurality of the first holes (211);
A plurality of guide plates (220), described a plurality of guide plates (220) are engaged to the upper surface of described the first platform (210);
Raw coal supply unit (300), described raw coal supply unit (300) is supplied to raw coal crushed material the upper surface of described the first platform (210);
Air blast (400), described air blast (400) is arranged on the inside of described main body (100) and air is sent to described the first hole (211); And
Vibration section (500), described vibration section (500) apply the vibration of horizontal direction to described the first platform (210), so that the cleaned coal particle in raw coal crushed material and barren rock particle are discharged along the path differing from one another.
2. coal screening plant according to claim 1 (1000), is characterized in that, described coal screening plant (1000) also comprises:
The second platform (230), described the second platform (230) is arranged between described the first platform (210) and described air blast (400), and is formed with a plurality of the second holes (231) that the air transmitting from described air blast (400) are divided into uniform size; And
Framework (240), in the upper surface of described framework (240) and lower surface, be inserted with respectively described the first platform (210) and described the second platform (230), along the incline direction of described inclined plane (110), be mounted obliquely within the inner side of described inclined plane (110).
3. coal screening plant according to claim 2 (1000), is characterized in that, described second hole (231) of described the second platform (230) forms wider than described the first hole (211).
4. coal screening plant according to claim 1 (1000), it is characterized in that, described coal screening plant (1000) also comprises the first wavy thing (250), the second wavy thing (260) and blocking-up wall (270), when a plurality of bights of described the first platform (210) are called the first bight (212) with the ascending order of the height of present position, the second bight (213), triangular part (214), during the 4th bight (215), described the first wavy thing (250) is arranged between the upper end in described the second bight (213) and the upper end in described the 4th bight (215), described the second wavy thing (260) is arranged between the upper end in described the first bight (212) and the upper end of described triangular part (214), described blocking-up wall (270) is centered around between the upper end in described the first bight (212) and the upper end in described the second bight (213).
5. coal screening plant according to claim 1 (1000), it is characterized in that, when a plurality of bights of described the first platform (210) are called the first bight (212), the second bight (213), triangular part (214), the 4th bight (215) with the ascending order of the height of present position
Between described the 4th upper end in bight (215) and the upper end of described triangular part (214), by the first partition wall (280) and the second partition wall (290), be divided between (216) between the first row clearancen adjacent with described the 4th bight (215) and the second row clearancen adjacent with described triangular part (214) (217)
The cleaned coal particle that is mixed with a small amount of gangue particle being supplied in the raw coal crushed material of described the first platform (210) is expelled between described first row clearancen (216), and the gangue particle that is mixed with a small amount of cleaned coal particle is expelled between described second row clearancen (217).
6. coal screening plant according to claim 1 (1000), is characterized in that, described coal screening plant (1000) also comprises sucting (700), and described sucting (700) is arranged on the upside of described main body (100), for sucking dust.
7. coal screening plant according to claim 1 (1000), it is characterized in that, described coal screening plant (1000) is constant and be applied to and under the state that the vibration frequency of described the first platform (210) is constant, meet following formula 1 in the driving frequency of described air blast (400):
< formula 1>
CR=0.2173FR
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-7.6525FR+96.385(, and FR is the raw coal crushed material quantity delivered hourly of described raw coal supply unit (300), FR=2～6).
8. coal screening plant according to claim 1 (1000), it is characterized in that, described coal screening plant (1000) is in application to and under the state that the vibration frequency raw coal crushed material quantity delivered hourly constant and described raw coal supply unit (300) of described the first platform (210) is constant, meets following formula 2:
< formula 2>
CR=0.0221ABF
2wherein, CR is the combustible rate of recovery containing in raw coal crushed material to-1.4684ABF+91.983(, and ABF is the driving frequency of described air blast (400), ABF=30～60).
9. according to the coal screening plant (1000) described in any one in claim 1 to 8, it is characterized in that the poor face (218) of the upper surface section of forming of described the first platform (210).
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020130037326A KR101295167B1 (en) | 2013-04-05 | 2013-04-05 | Coal separation apparatus |
| KR10-2013-0037326 | 2013-04-05 |
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| CN103551310B CN103551310B (en) | 2015-06-24 |
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| CN104138844A (en) * | 2014-06-27 | 2014-11-12 | 东南大学 | Micro-fluidic drug screening chip |
| CN104438090A (en) * | 2014-10-19 | 2015-03-25 | 耒阳市诚松有色金属再生有限公司 | Slag screening device of mineral separation boiler |
| CN112934694A (en) * | 2021-01-28 | 2021-06-11 | 重庆城市管理职业学院 | Gangue screening installation |
| CN115025997A (en) * | 2022-05-24 | 2022-09-09 | 安徽理工大学 | Coal gangue sorting device and using method |
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| CN104438090A (en) * | 2014-10-19 | 2015-03-25 | 耒阳市诚松有色金属再生有限公司 | Slag screening device of mineral separation boiler |
| CN112934694A (en) * | 2021-01-28 | 2021-06-11 | 重庆城市管理职业学院 | Gangue screening installation |
| CN112934694B (en) * | 2021-01-28 | 2023-03-10 | 重庆城市管理职业学院 | Gangue screening installation |
| CN115025997A (en) * | 2022-05-24 | 2022-09-09 | 安徽理工大学 | Coal gangue sorting device and using method |
| CN115025997B (en) * | 2022-05-24 | 2023-05-26 | 安徽理工大学 | Gangue sorting device and using method |
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| CN103551310B (en) | 2015-06-24 |
| KR101295167B1 (en) | 2013-08-09 |
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